移动web开发学习整理

移动web

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flex弹性

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案例

弹性携程首页

效果：在这里插入图片描述
.base.css

body,
div,
span,
p,
ul,
li,
a,
img,
input,
h1,
h2,
h3,
h4,
i {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

img {
	vertical-align: middle;
	border: none;
}

input {
	border: none;
	outline: none;
}

a {
	text-decoration: none;
	color: #000;
}

i {
	font-style: normal;
}

li {
	list-style: none;
}

body {
	font-size: 12px;
	line-height: 1;
	background-color: #ccc;
}

.clearfix::after {
	content: ".";
	clear: both;
	display: block;
	height: 0;
	visibility: hidden;
}

.clearfix {
	*zoom: 1;
}

index.html

<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta name="viewport"
        content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0,user-scalable=no">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="./css/base.css">
    <link rel="stylesheet" href="./css/index.css">
</head>

<body>
    <div class="container">
        <div class="nav">
            <ul>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        景点·玩乐
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        景点·玩乐
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        景点·玩乐
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        景点·玩乐
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        景点·玩乐
                    </a>
                </li>
            </ul>
        </div>
        <div class="main">
            <div class="items hotel">
                <div class="title">
                    <a href="#">酒店</a>
                </div>
                <div class="option">
                    <a href="#">特价酒店</a>
                    <a href="#">海外酒店</a>
                </div>
                <div class="option">
                    <a href="#">特价酒店</a>
                    <a href="#">海外酒店</a>
                </div>
            </div>
            <div class="items flight">
                <div class="title">
                    <a href="#">机票</a>
                </div>
                <div class="option">
                    <a href="#">特价酒店</a>
                    <a href="#">海外酒店</a>
                </div>
                <div class="option">
                    <a href="#">特价酒店</a>
                    <a href="#">海外酒店</a>
                </div>
            </div>
            <div class="items travel">
                <div class="title">
                    <a href="#">旅游</a>
                </div>
                <div class="option">
                    <a href="#">特价酒店</a>
                    <a href="#">海外酒店</a>
                </div>
                <div class="option">
                    <a href="#">特价酒店</a>
                    <a href="#">海外酒店</a>
                </div>
            </div>
        </div>
        <div class="links">
            <ul>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="icon"></i>
                        当地向导
                    </a>
                </li>
                
            </ul>
        </div>
    </div>
</body>

</html>

index.css

.container {
    padding: 0 5px;
}

.nav {
    width: 100%;
    height: 64px;
    background-color: #fff;
    border-radius: 8px;
}

.nav ul {
    display: flex;
}

.nav ul li {
    /* 所有li所占空间为1:1:1:1:1 */
    flex: 1;
    height: 64px;
}

.nav li a {
    display: block;
    width: 100%;
    height: 100%;
    overflow: hidden;
    text-align: center;
}

.nav li .icon {
    display: block;
    width: 32px;
    height: 32px;
    background: url("../img/sprite.png");
    background-size: 32px;
    margin: 7px auto 4px;

}

.nav li:nth-child(2) .icon {
    background-position-y: -32px;
}

.nav li:nth-child(3) .icon {
    background-position-y: -64px;
}

.nav li:nth-child(4) .icon {
    background-position-y: -96px;
}

.nav li:nth-child(5) .icon {
    background-position-y: bottom;
}

.main {
    width: 100%;
    height: 269px;
    background-color: #fff;
    border-radius: 8px;
    margin-top: 5px;
    display: flex;
    /* 改变主轴方向为从上往下 */
    flex-direction: column;
    /* 因为主轴方向为从上往下所以这里用justify-content:space-between */
    justify-content: space-between;
    overflow: hidden;
}

.main .items {
    width: 100%;
    height: 88px;
    display: flex;
}
.main .hotel{
    background: linear-gradient(to right,#fa5956,#fa9a4d);
}
.main .flight{
    background: linear-gradient(to right,#4b8fed,#53bced);
}
.main .travel{
    background: linear-gradient(to right,#33c2a9,#6bd559);
}
.main .items>div{
    height: 100%;
    flex: 1;
}
.main .items .option{
    border-left: 1px solid #fff;
}
.main .items a{
    display: block;
    width: 100%;
    height: 100%;
    font-size: 14px;
    text-align: center;
    line-height: 43px;
    color: #fff;
}
.main .items .title{
    background: url("../img/hotel.png") no-repeat bottom;
    background-size: 100%;
}
.main  .items .option a{
    height: 50%;
}
.main .items .option a:first-child{
    border-bottom: 1px solid #fff;
}
.main .flight .title{
    background-image: url("../img/flight.png") ;

}
.main .travel .title{
    background-image: url("../img/travel.png");
}
.links{
    width: 100%;
    height: 116px;
    background-color: #fff;
    border-radius: 8px;
    margin-top: 5px;
}
.links ul{
    display: flex;
    flex-wrap: wrap;
}
.links li{
    height: 58px;
    width: 20%;
}
.links li a{
    display: block;
    width: 100%;
    height: 100%;
    text-align: center;
    overflow: hidden;
}
.links li .icon{
    display: block;
    width: 23px;
    height: 21px;
    background: url("../img/subnav.png")0 -86px;
    background-size: 24px;
    margin: 10px auto 7px;
}

总结

模块一：

有五个栏目给弹性，li给flex=1；他们的比例为1:1:1:1:1。

.nav ul {
    display: flex;
}

.nav ul li {
    /* 所有li所占空间为 */
    flex: 1;
    height: 64px;
}

模块二

这里给父盒子flex,分三个模块，也就是三个盒子，通过改变主轴的方向进行布局。

.main {
    width: 100%;
    height: 269px;
    background-color: #fff;
    border-radius: 8px;
    margin-top: 5px;
    display: flex;
    /* 改变主轴方向为从上往下 */
    flex-direction: column;
    /* 因为主轴方向为从上往下所以这里用justify-content:space-between */
    justify-content: space-between;
    overflow: hidden;
}

模块布局类似，布局时注意代码父用性

移动web开发学习整理

移动web

flex弹性

案例

弹性携程首页

总结

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